In the phrase "keep somebody occupied", "occupy" means（).A、crowdedB

In "You will make yourself tired, keeping on your legs. " the -ing participle phrase is us

The word "proliferation" in the passage is closest in meaning toA．beginningB．increaseC．occ

Whats the meaning of "humor" in the first paragraph？A．To pretend to agree with somebody.B．

The phrase "ploughing through" （Para. 1)most probably means "A．quoting preciselyB．rewritin

An ambulance was waiting in the street, somebody______hurt or killed.A．should have beenB．m

The phrase In other wordsin the first paragraph